<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html lang="en">
<head>
	<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
	<title>exercise</title>
</head>
	<script type="text/javascript">
	document.write("<table>")
		for (var i = 1; i <= 6; i++) {
			document.write("<tr>")
			for (var j =1 ; j <= 11; j++) {
				if (j<=6-i || j>=6+i) {
					document.write("<td>&nbsp;<td/>")
				}
			else{	document.write("<td>*<td/>")
			}
		}		
		};
	document.write("</tr>")
	document.write("</table>");
	</script>
<body>
	
</body>
</html>